Incorrect order & no stock

I placed & paid my online order for megamaster spa B110 silver cloud. I received confirmation the order is ready for collection on 8 March. I received the wrong order & e-mailed megamaster who forwarded this to online Makro. On 10 March, Lizzy informs me to drive back to Makro 50kms to exchange & receive the correct order, I waste 3 hourrs as Makro who received no info from Lizzy & I am told they are out of stock. I inform Lizzy. I receive a reply on 16 March they will deliver 17 March. I asked what time to ensure I am at premises, but expected to waste & wait the whole day for this exchange due to their error. I have not received a time that would suit me & no consideration for loss of work etc. due to their error. To try resolve this issue took 19 e-mails & still no progress! All this hassle is not worth the time, money & effort to buy online.